Finding the Fourth Proportional to 342,415.70, 513,623.55 and 155,791.70
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Solution
The fourth proportional to 342,415.70, 513,623.55 and 155,791.70 is: 233,687.55
Step by Step Solution
- Step 1: Write the proportion equation
342,415.70 : 513,623.55 = 155,791.70 : x - Step 2: Convert to fraction form
342,415.70/513,623.55 = 155,791.70/x - Step 3: Cross multiply
342,415.70x = 513,623.55 × 155,791.70 - Step 4: Simplify right side
342,415.70x = 80,018,286,014.54 - Step 5: Solve for x
x = 80,018,286,014.54/342,415.70 - Step 6: Final answer
x = 233,687.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.